the proposed change to a law that california ranchers were wrangling over today. >>> today is national ag day. one state law maker using this day to introduce a new bill that would make tougher penalties for cattle rustling. ken pritchett is live in liver more. he talked to one cattle owner who has been hit hard by he's. >> reporter: not too long ago cattle rustlers took two heifers. nobody was caught. thigh are animals that are accustomed to people. it likely wasn't difficult when cattle rustlers made off with a dozen of them. >> those animals were worth well over $22,000 on that day. >> reporter: we talked with ranch owner by phone. he says the heifers were a month away from dropping calves. $22,000 doesn't even covert loss. >> worth many times that if you consider the number of calves they will produce. >> reporter: the value of cattle has gone up by as many as 50% in recent years, making theft more tempting and the consequences if caught are light. frank has a bill to change that. >> the people convicted of stealing will stay in jail. not get a slap on the hand and be turned out th